flfs

Flash File System (FLFS) Tool

The FLFS tool creates and manages flash file system images for WINCS02 and RNWF02 modules. Use it to provision custom TLS certificates, private keys, and configuration files.

What This Folder Contains

• flfs.exe: FLFS utility for Windows
• flfs: FLFS utility for Linux
• certs/ssl.tar: default SSL certificate archive

Usage

To create a file system image, use the following command:

Windows:

flfs.exe -s 61440 -b 0x601e0000 -c -a certs\ssl.tar -i flfs_image.bin -m "certs/:1" -m "private/:2"

Linux:

./flfs -s 61440 -b 0x601e0000 -c -a certs/ssl.tar -i flfs_image.bin -m "certs/:1" -m "private/:2"

This will create a file system image with SSL certificates and private keys.

Adding Configuration Files

Use the -f flag to include individual files such as binary configuration files produced by the cfgc tool:

flfs.exe -s 61440 -b 0x601e0000 -c -a certs\ssl.tar -f config.bin -i flfs_image.bin -m "certs/:1" -m "private/:2"

Custom Certificates

The default certs/ssl.tar contains the pre-packaged TLS root certificates listed in the release notes. To add your own certificates, create a custom tar archive and rebuild the file system image.

Output

The tool produces a flfs_image.bin that can be flashed to the module's file system partition.

Help

Run flfs.exe -h (or ./flfs -h on Linux) to see all available options.